Sen. Jeff Sessions (R-Ala.) is sending a letter to top Senate appropriators, urging them to reject a quiet yet active push to expand the number of visas available for low-skilled foreign workers in government funding bills.

Sessions was irate after the omnibus bill that hastily passed Congress in December included a provision that would essentially quadruple the number of H-2B visas available. The letter, obtained by POLITICO, is an early marker from Sessions against doing so again in this year’s government funding bills.